GTK: More removal of raw GtkWidget->allocation access.

chrome/browser/automation/testing_automation_provider_gtk.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/automation/testing_automation_provider.h"
 
 #include <gtk/gtk.h>
 
 #include "base/logging.h"
 #include "base/utf_string_conversions.h"
@@ skipping 25 matching lines @@
                                                     gfx::Rect* bounds) {
   *success = false;
 
   GtkWindow* window = window_tracker_->GetResource(handle);
   if (window) {
     GtkWidget* widget = ViewIDUtil::GetWidget(GTK_WIDGET(window),
                                               static_cast<ViewID>(view_id));
     if (!widget)
       return;
     *success = true;
-    *bounds = gfx::Rect(widget->allocation.width, widget->allocation.height);
+
+    GtkAllocation allocation;
+    gtk_widget_get_allocation(widget, &allocation);
+    *bounds = gfx::Rect(allocation.width, allocation.height);
     gint x, y;
     if (screen_coordinates) {
       gfx::Point point = gtk_util::GetWidgetScreenPosition(widget);
       x = point.x();
       y = point.y();
     } else {
       gtk_widget_translate_coordinates(widget, GTK_WIDGET(window),
                                        0, 0, &x, &y);
     }
     bounds->set_origin(gfx::Point(x, y));
@@ skipping 33 matching lines @@
     }
     *result = true;
   }
 }
 
 void TestingAutomationProvider::GetWindowTitle(int handle, string16* text) {
   gfx::NativeWindow window = window_tracker_->GetResource(handle);
   const gchar* title = gtk_window_get_title(window);
   text->assign(UTF8ToUTF16(title));
 }